FORTRAN control of graphics on the amiga microcomputer

The graphic capabilities of the Amiga microcomputer offer considerable potential for perceptual and cognitive research. These capabilities, however, are most easily accessed via the C programming language. Manipulating Amiga graphics hardware is considerably more difficult for the FORTRAN programmer. A package of FORTRAN 77 routines is described which has been designed to allow images to be easily processed and presented by means of calls from a FORTRAN experiment control program.